小学生诗词楹联经典诵读开展方式的探究

诗词楹联是传统文化中的重要组成部分,读起来朗朗上口。诗词的历史非常悠久,从商周时期的《诗经》到唐诗宋词再到近代诗词,留给学生的是丰富的文化遗产。而楹联的历史也非常悠久,广义的楹联可以追溯到《诗经》时期,因为诗经中有很多对仗的语句,例如“昔我往矣,杨柳依依;今我来思,雨雪霏霏”等。狭义的楹联从五代后蜀主孟昶开始就已经非常普遍了。而到了明清时期,对对联的风俗非常盛行,对对联成为文人士大夫们重要的娱乐方式。可以说,诗词和楹联以其短小精悍的特点成为了古代流传最广的文学形式之一。因此,小学阶段朗诵诗词楹联是对传统文化的有力传承和发扬。     

浅谈翻译教学在英语课堂中的应用

英语新课程标准提出要突出语言的实践性,强调语言技能的重要地位,翻译是一种综合运用语言技能的重要表现。当前我国英语教学对学生翻译技能的培养重视度较弱,本文分析了当前英语课堂中学生翻译水平的现状,并进一步提出将翻译教学应用于英语课堂中,提高学生的语用能力和语言技能。     

Encapsulating metal organic framework into hollow mesoporous carbon sphere as efficient oxygen bifunctional electrocatalyst

Applying metal organic frameworks (MOFs) in electrochemical systems is a currently emerging field owing to the rich metal nodes and highly specific surface area of MOFs. However, the problems for MOFs that need to be solved urgently are poor electrical conductivity and low ion transport. Here we present a facile in situ growth method for the rational synthesis of MOFs@hollow mesoporous carbon spheres (HMCS) yolk–shell-structured hybrid material for the first time. The size of the encapsulated Zeolitic Imidazolate Framework-67 (ZIF-67) is well controlled to 100 nm due to the spatial confinement effect of HMCS, and the electrical conductivity of ZIF-67 is also increased significantly. The ZIF@HMCS-25% hybrid material obtained exhibits a highly efficient oxygen reduction reaction activity with 0.823 V (vs. reversible hydrogen electrode) half-wave potential and an even higher kinetic current density (J_K = 13.8 mA cm⁻²) than commercial Pt/C. ZIF@HMCS-25% also displays excellent oxygen evolution reaction performance and the overpotential of ZIF@HMCS-25% at 10 mA cm⁻² is 407 mV. In addition, ZIF@HMCS-25% is further employed as an air electrode for a rechargeable Zn–air battery, exhibiting a high power density (120.2 mW cm⁻² at 171.4 mA cm⁻²) and long-term charge/discharge stability (80 h at 5 mA cm⁻²). This MOFs@HMCS yolk–shell design provides a versatile method for the application of MOFs as electrocatalysts directly.     

Experiments on Cu-isotope fractionation between chlorine-bearing fluid and silicate magma: implications for fluid exsolution and porphyry Cu deposits

Hydrothermal fluid is essential for transporting metals in the crust and mantle. To explore the potential of Cu isotopes as a tracer of hydrothermal-fluid activity, Cu-isotope fractionation factors between Cl-bearing aqueous fluids and silicate magmas (andesite, dacite, rhyolite dacite, rhyolite and haplogranite) were experimentally calibrated. Fluids containing 1.75–14 wt.% Cl were mixed together with rock powders in Au₉₅Cu₅ alloy capsules, which were equilibrated in cold-seal pressure vessels for 5–13 days at 800–850°C and 2 kbar. The elemental and Cu-isotopic compositions of the recovered aqueous fluid and solid phases were analyzed by (LA-) ICP–MS and multi-collector inductively coupled plasma mass spectrometry, respectively. Our experimental results show that the fluid phases are consistently enriched in heavy Cu isotope (⁶⁵Cu) relative to the coexisting silicates. The Cu-isotope fractionation factor (Δ⁶⁵Cu_FLUID-MELT) ranges from 0.08 ± 0.01‰ to 0.69 ± 0.02‰. The experimental results show that the Cu-isotopic fractionation factors between aqueous fluids and silicates strongly depend on the Cu speciation in the fluids (e.g. CuCl(H₂O), CuCl₂^– and CuCl₃²⁻) and silicate melts (CuO_1/2), suggesting that the exsolved fluids may have higher δ⁶⁵Cu than the residual magmas. Our results suggest the elevated δ⁶⁵Cu values in Cu-enriched rocks could be produced by addition of aqueous fluids exsolved from magmas. Together with previous studies on Cu isotopes in the brine and vapor phases of porphyry deposits, our results are helpful for better understanding Cu-mineralization processes.     

税法与会计制度差异成因分析

众所周知,目前我国税法和会计制度有一定的差异,有的甚至相冲突。特别是新《企业会计准则》颁布以后,从某种程度上说,这种差距正在日益扩大,使得企业不得不增加成本去进行纳税调整。这种差异所导致的成本是否应该一定由企业来承担呢?国家对于两种制度的协调是否有原则性的指导方向等等,这些问题的解决都需要从两者最基本的原则谈起,本文将以世界主要国家模式选择为背景,立足于我国实践,以历史发展为线索,从原则层面分析两者产生的原因。     

胎儿成熟、分娩与婴幼儿心理形成浅论

胎儿的发育成熟,既是生理意义上的,也是心理的物质基础意义上的,是由胎儿自己来判定的;人的一生发展”程序“都是在胎儿阶段设定完成的;分娩与护理将影响新生命的一生。     

美国"清洁空气的挑战"培训案例介绍

简单介绍了美国“清洁空气的挑战”培训项目,并简要阐述了其对中国探究性学习的启发。     

银镜反应中若干问题的探讨

概述 银镜反应是高二化学教材中一个典型的演示实验,此实验是有机化学中鉴别醛和酮、还原糖和非还原糖、甲酸同其它羧酸的一种有效手段。下面将对银镜反应实验中需注意的一些问题列举出来并进行探讨。     

加强责任教育注重方法创新

方法僵化、内容空泛、实效性差是目前我国大学生责任教育面临的三个突出问题,而对大学生责任教育的内容体系构建及实施方式的研究等则是百家争鸣。本文从大学生德育教育的方法研究入手,探索增强大学生责任教育实效性的方法,丰富大学生责任教育的理论研究。     

对外宣传基层路线的经验、理论与策略研究

在"一带一路"和"中非合作"的背景下,"第四世界"是我国当前对外传播工作的重要对象."第四世界"本身落后贫乏的媒介生态,要求我们在对其进行外宣活动时,应当探索出不同于驻外媒体、孔子学院等正式平台的其他机制.本文根据马拉维录像厅和新中国初期读报组这两种基层媒介实践,提出我们在对"第四世界"进行国家形象传播时,可以将"群众...